/Engine/Source/Runtime/Slate/Public/Widgets/Input/STextComboPopup.h
SWidgetinterface
virtual [FReply](API\Runtime\SlateCore\Input\FReply) OnKeyDown ( const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & MyGeometry, const [FKeyEvent](API\Runtime\SlateCore\Input\FKeyEvent) & InKeyEvent )